using System;
using System.IO;
using System.IO.Compression;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization.Formatters.Soap;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
namespace PlatForm.Utilities
{
 public enum SerializedType : ushort
 {
  ByteArray = 0,
  Object = 1,
  String = 2,
  Datetime = 3,
  Bool = 4,
  //SByte  = 5, //Makes no sense.
  Byte = 6,
  Short = 7,
  UShort = 8,
  Int = 9,
  UInt = 10,
  Long = 11,
  ULong = 12,
  Float = 13,
  Double = 14,
  CompressedByteArray = 255,
  CompressedObject = 256,
  CompressedString = 257,
 }
 public class SerializeHelper
 {
  public SerializeHelper()
  { }
  #region XML序列化
  /// <summary>
  /// 文件化XML序列化
  /// </summary>
  /// <param name=\"obj\">对象</param>
  /// <param name=\"filename\">文件路径</param>
  public static void Save(object obj, string filename)
  {
   FileStream fs = null;
   try
   {
    fs = new FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.ReadWrite);
    XmlSerializer serializer = new XmlSerializer(obj.GetType());
    serializer.Serialize(fs, obj);
   }
   catch (Exception ex)
   {
    throw ex;
   }
   finally
   {
    if (fs != null) fs.Close();
   }
  }
  /// <summary>
  /// 文件化XML反序列化
  /// </summary>
  /// <param name=\"type\">对象类型</param>
  /// <param name=\"filename\">文件路径</param>
  public static object Load(Type type, string filename)
  {
   FileStream fs = null;
   try
   {
    fs = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
    XmlSerializer serializer = new XmlSerializer(type);
    return serializer.Deserialize(fs);
   }
   catch (Exception ex)
   {
    throw ex;
   }
   finally
   {
    if (fs != null) fs.Close();
   }
  }
  /// <summary>
  /// 文本化XML序列化
  /// </summary>
  /// <param name=\"item\">对象</param>
  public string ToXml<T>(T item)
  {
   XmlSerializer serializer = new XmlSerializer(item.GetType());
   StringBuilder sb = new StringBuilder();
   using (XmlWriter writer = XmlWriter.Create(sb))
   {
    serializer.Serialize(writer, item);
    return sb.ToString();
   }
  }
  /// <summary>
  /// 文本化XML反序列化
  /// </summary>
  /// <param name=\"str\">字符串序列</param>
  public T FromXml<T>(string str)
  {
   XmlSerializer serializer = new XmlSerializer(typeof(T));
   using (XmlReader reader = new XmlTextReader(new StringReader(str)))
   {
    return (T)serializer.Deserialize(reader);
   }
  }
  #endregion  
  #region SoapFormatter序列化
  /// <summary>
  /// SoapFormatter序列化
  /// </summary>
  /// <param name=\"item\">对象</param>
  public static string ToSoap<T>(T item)
  {
   SoapFormatter formatter = new SoapFormatter();
   using (MemoryStream ms = new MemoryStream())
   {
    formatter.Serialize(ms, item);
    ms.Position = 0;
    XmlDocument xmlDoc = new XmlDocument();
    xmlDoc.Load(ms);
    return xmlDoc.InnerXml;
   }
  }
  /// <summary>
  /// SoapFormatter反序列化
  /// </summary>
  /// <param name=\"str\">字符串序列</param>
  public static T FromSoap<T>(string str)
  {
   XmlDocument xmlDoc = new XmlDocument();
   xmlDoc.LoadXml(str);
   SoapFormatter formatter = new SoapFormatter();
   using (MemoryStream ms = new MemoryStream())
   {
    xmlDoc.Save(ms);
    ms.Position = 0;
    return (T)formatter.Deserialize(ms);
   }
  }
  #endregion
  #region BinaryFormatter序列化
  /// <summary>
  /// BinaryFormatter序列化
  /// </summary>
  /// <param name=\"item\">对象</param>
  public static string ToBinary<T>(T item)
  {
   BinaryFormatter formatter = new BinaryFormatter();
   using (MemoryStream ms = new MemoryStream())
   {
    formatter.Serialize(ms, item);
    ms.Position = 0;
    byte[] bytes = ms.ToArray();
    StringBuilder sb = new StringBuilder();
    foreach (byte bt in bytes)
    {
     sb.Append(string.Format(\"{0:X2}\", bt));
    }
    return sb.ToString();
   }
  }
  /// <summary>
  /// BinaryFormatter反序列化
  /// </summary>
  /// <param name=\"str\">字符串序列</param>
  public static T FromBinary<T>(string str)
  {
   int intLen = str.Length / 2;
   byte[] bytes = new byte[intLen];
   for (int i = 0; i < intLen; i++)
   {
    int ibyte = Convert.ToInt32(str.Substring(i * 2, 2), 16);
    bytes[i] = (byte)ibyte;
   }
   BinaryFormatter formatter = new BinaryFormatter();
   using (MemoryStream ms = new MemoryStream(bytes))
   {
    return (T)formatter.Deserialize(ms);
   }
  }
  #endregion
  /// <summary>
  /// 将对象序列化为二进制字节
  /// </summary>
  /// <param name=\"obj\">待序列化的对象</param>
  /// <returns></returns>
  public static byte[] SerializeToBinary(object obj)
  {
   byte[] bytes = new byte[2500];
   using (MemoryStream memoryStream = new MemoryStream())
   {
    BinaryFormatter bformatter = new BinaryFormatter();
    bformatter.Serialize(memoryStream, obj);
    memoryStream.Seek(0, 0);
    if (memoryStream.Length > bytes.Length)
    {
     bytes = new byte[memoryStream.Length];
    }
    bytes = memoryStream.ToArray();
   }
   return bytes;
  }
  /// <summary>
  /// 从二进制字节中反序列化为对象
  /// </summary>
  /// <param name=\"type\">对象的类型</param>
  /// <param name=\"bytes\">字节数组</param>
  /// <returns>反序列化后得到的对象</returns>
  public static object DeserializeFromBinary(Type type, byte[] bytes)
  {
   object result = new object();
   using (MemoryStream memoryStream = new MemoryStream(bytes))
   {
    BinaryFormatter serializer = new BinaryFormatter();
    result = serializer.Deserialize(memoryStream);
   }
   return result;
  }
  /// <summary>
  /// 将文件对象序列化到文件中
  /// </summary>
  /// <param name=\"obj\">待序列化的对象</param>
  /// <param name=\"path\">文件路径</param>
  /// <param name=\"fileMode\">文件打开模式</param>
  public static void SerializeToBinary(object obj, string path, FileMode fileMode)
  {
   using (FileStream fs = new FileStream(path, fileMode))
   {
    // Construct a BinaryFormatter and use it to serialize the data to the stream.
    BinaryFormatter formatter = new BinaryFormatter();
    formatter.Serialize(fs, obj);
   }
  }
  /// <summary>
  /// 将文件对象序列化到文件中
  /// </summary>
  /// <param name=\"obj\">待序列化的对象</param>
  /// <param name=\"path\">文件路径</param>
  public static void SerializeToBinary(object obj, string path)
  {
   SerializeToBinary(obj, path, FileMode.Create);
  }
  /// <summary>
  /// 从二进制文件中反序列化为对象
  /// </summary>
  /// <param name=\"type\">对象的类型</param>
  /// <param name=\"path\">二进制文件路径</param>
  /// <returns>反序列化后得到的对象</returns>
  public static object DeserializeFromBinary(Type type, string path)
  {
   object result = new object();
   using (FileStream fileStream = new FileStream(path, FileMode.Open))
   {
    BinaryFormatter serializer = new BinaryFormatter();
    result = serializer.Deserialize(fileStream);
   }
   return result;
  }
  /// <summary>
  /// 获取对象的转换为二进制的字节大小
  /// </summary>
  /// <param name=\"obj\"></param>
  /// <returns></returns>
  public static long GetByteSize(object obj)
  {
   long result;
   BinaryFormatter bFormatter = new BinaryFormatter();
   using (MemoryStream stream = new MemoryStream())
   {
    bFormatter.Serialize(stream, obj);
    result = stream.Length;
   }
   return result;
  }
  /// <summary>
  /// 克隆一个对象
  /// </summary>
  /// <param name=\"obj\">待克隆的对象</param>
  /// <returns>克隆的一个新的对象</returns>
  public static object Clone(object obj)
  {
   object cloned = null;
   BinaryFormatter bFormatter = new BinaryFormatter();
   using (MemoryStream memoryStream = new MemoryStream())
   {
    try
    {
     bFormatter.Serialize(memoryStream, obj);
     memoryStream.Seek(0, SeekOrigin.Begin);
     cloned = bFormatter.Deserialize(memoryStream);
    }
    catch //(Exception e)
    {
     ;
    }
   }
   return cloned;
  }
  /// <summary>
  /// 从文件中读取文本内容
  /// </summary>
  /// <param name=\"path\">文件路径</param>
  /// <returns>文件的内容</returns>
  public static string ReadFile(string path)
  {
   string content = string.Empty;
   using (StreamReader reader = new StreamReader(path))
   {
    content = reader.ReadToEnd();
   }
   return content;
  }
  public static byte[] Serialize(object value, out SerializedType type, uint compressionThreshold)
  {
   byte[] bytes;
   if (value is byte[])
   {
    bytes = (byte[])value;
    type = SerializedType.ByteArray;
    if (bytes.Length > compressionThreshold)
    {
     bytes = compress(bytes);
     type = SerializedType.CompressedByteArray;
    }
   }
   else if (value is string)
   {
    bytes = Encoding.UTF8.GetBytes((string)value);
    type = SerializedType.String;
    if (bytes.Length > compressionThreshold)
    {
     bytes = compress(bytes);
     type = SerializedType.CompressedString;
    }
   }
   else if (value is DateTime)
   {
    bytes = BitConverter.GetBytes(((DateTime)value).Ticks);
    type = SerializedType.Datetime;
   }
   else if (value is bool)
   {
    bytes = new byte[] { (byte)((bool)value ? 1 : 0) };
    type = SerializedType.Bool;
   }
   else if (value is byte)
   {
    bytes = new byte[] { (byte)value };
    type = SerializedType.Byte;
   }
   else if (value is short)
   {
    bytes = BitConverter.GetBytes((short)value);
    type = SerializedType.Short;
   }
   else if (value is ushort)
   {
    bytes = BitConverter.GetBytes((ushort)value);
    type = SerializedType.UShort;
   }
   else if (value is int)
   {
    bytes = BitConverter.GetBytes((int)value);
    type = SerializedType.Int;
   }
   else if (value is uint)
   {
    bytes = BitConverter.GetBytes((uint)value);
    type = SerializedType.UInt;
   }
   else if (value is long)
   {
    bytes = BitConverter.GetBytes((long)value);
    type = SerializedType.Long;
   }
   else if (value is ulong)
   {
    bytes = BitConverter.GetBytes((ulong)value);
    type = SerializedType.ULong;
   }
   else if (value is float)
   {
    bytes = BitConverter.GetBytes((float)value);
    type = SerializedType.Float;
   }
   else if (value is double)
   {
    bytes = BitConverter.GetBytes((double)value);
    type = SerializedType.Double;
   }
   else
   {
    //Object
    using (MemoryStream ms = new MemoryStream())
    {
     new BinaryFormatter().Serialize(ms, value);
     bytes = ms.GetBuffer();
     type = SerializedType.Object;
     if (bytes.Length > compressionThreshold)
     {
      bytes = compress(bytes);
      type = SerializedType.CompressedObject;
     }
    }
   }
   return bytes;
  }
  private static byte[] compress(byte[] bytes)
  {
   using (MemoryStream ms = new MemoryStream())
   {
    using (DeflateStream gzs = new DeflateStream(ms, CompressionMode.Compress, false))
    {
     gzs.Write(bytes, 0, bytes.Length);
    }
    ms.Close();
    return ms.GetBuffer();
   }
  }
  private static byte[] decompress(byte[] bytes)
  {
   using (MemoryStream ms = new MemoryStream(bytes, false))
   {
    using (DeflateStream gzs = new DeflateStream(ms, CompressionMode.Decompress, false))
    {
     using (MemoryStream dest = new MemoryStream())
     {
      byte[] tmp = new byte[bytes.Length];
      int read;
      while ((read = gzs.Read(tmp, 0, tmp.Length)) != 0)
      {
       dest.Write(tmp, 0, read);
      }
      dest.Close();
      return dest.GetBuffer();
     }
    }
   }
  }
  public static object DeSerialize(byte[] bytes, SerializedType type)
  {
   switch (type)
   {
    case SerializedType.String:
     return Encoding.UTF8.GetString(bytes);
    case SerializedType.Datetime:
     return new DateTime(BitConverter.ToInt64(bytes, 0));
    case SerializedType.Bool:
     return bytes[0] == 1;
    case SerializedType.Byte:
     return bytes[0];
    case SerializedType.Short:
     return BitConverter.ToInt16(bytes, 0);
    case SerializedType.UShort:
     return BitConverter.ToUInt16(bytes, 0);
    case SerializedType.Int:
     return BitConverter.ToInt32(bytes, 0);
    case SerializedType.UInt:
     return BitConverter.ToUInt32(bytes, 0);
    case SerializedType.Long:
     return BitConverter.ToInt64(bytes, 0);
    case SerializedType.ULong:
     return BitConverter.ToUInt64(bytes, 0);
    case SerializedType.Float:
     return BitConverter.ToSingle(bytes, 0);
    case SerializedType.Double:
     return BitConverter.ToDouble(bytes, 0);
    case SerializedType.Object:
     using (MemoryStream ms = new MemoryStream(bytes))
     {
      return new BinaryFormatter().Deserialize(ms);
     }
    case SerializedType.CompressedByteArray:
     return DeSerialize(decompress(bytes), SerializedType.ByteArray);
    case SerializedType.CompressedString:
     return DeSerialize(decompress(bytes), SerializedType.String);
    case SerializedType.CompressedObject:
     return DeSerialize(decompress(bytes), SerializedType.Object);
    case SerializedType.ByteArray:
    default:
     return bytes;
   }
  }
 }
}